def pgm(self):
q = QSetup(self, maxdil=16, debug=False, mindilvol=60)
self.e.addIdleProgram(q.idler)
input = [s.getsample() for s in self.srcs]
# Save RT product from first (uncleaved) round and then use it during 2nd (cleaved) round for ligation and qPCR measurements
prefixIn = [inp['prefix'] for inp in self.inputs]
prefixOut = [
"A" if p == "W" else
"B" if p == "A" else "W" if p == "B" else "BADPREFIX"
for p in prefixIn
]
qpcrPrimers = ["REF", "MX", "T7X"]
if "W" in prefixIn + prefixOut:
qpcrPrimers += ["T7WX"]
if "A" in prefixIn + prefixOut:
qpcrPrimers += ["T7AX"]
if "B" in prefixIn + prefixOut:
qpcrPrimers += ["T7BX"]
q.addSamples(decklayout.SSDDIL, 1, qpcrPrimers,
save=False) # Negative controls
print "Starting new cleavage round, will add prefix: ", prefixOut
names = [i.name for i in input]
print "######## T7 ###########"
print "Inputs: (t7vol=%.2f)" % self.t7vol
for inp in input:
print " %s: %.1ful@%.1f nM, use %.1f ul (%.3f pmoles)" % (
inp.name, inp.volume, inp.conc.stock, self.t7vol /
inp.conc.dilutionneeded(), self.t7vol * inp.conc.final / 1000)
print "input[0]=", input[0]
needDil = max([inp.conc.final for inp in input]) * 1.0 / self.qConc
if self.directT7:
# Just add MT7 and possibly water to each well
mconc = reagents.getsample("MT7").conc.dilutionneeded()
for i in range(len(input)):
watervol = self.t7vol * (1 - 1 / mconc) - input[i].volume
if watervol > 0.1:
self.e.transfer(watervol,
decklayout.WATER,
input[i],
mix=(False, False))
self.e.transfer(self.t7vol / mconc,
reagents.getsample("MT7"),
input[i],
mix=(False, False))
assert (input[i].volume == self.t7vol)
rxs = input
else:
rxs = self.runT7Setup(
src=input,
vol=self.t7vol,
srcdil=[inp.conc.dilutionneeded() for inp in input])
print "input[0]=", input[0]
#for i in range(len(rxs)):
# q.addSamples(src=rxs],needDil=needDil,primers=["T7"+prefixIn[i]+"X","MX","T7X","REF"],names=["%s.T-"%names[i]])
self.runT7Pgm(dur=self.t7dur, vol=self.t7vol)
print "Template conc=%.1f nM, estimated RNA concentration in T7 reaction at %.0f nM" % (
self.tmplFinalConc, self.rnaConc)
print "######## Stop ###########"
self.e.lihahome()
print "Have %.1f ul before stop" % rxs[0].volume
preStopVolume = rxs[0].volume
self.addEDTA(tgt=rxs, finalconc=2) # Stop to 2mM EDTA final
stopDil = rxs[0].volume / preStopVolume
if self.saveRNA:
self.saveSamps(
src=rxs,
vol=5,
dil=2,
plate=decklayout.DILPLATE,
dilutant=reagents.getsample("TE8"),
mix=(False,
False)) # Save to check [RNA] on Qubit, bioanalyzer
stop = [
"A-Stop" if n == "A" else
"B-Stop" if n == "B" else "W-Stop" if n == "W" else "BADPREFIX"
for n in prefixOut
]
for i in range(len(rxs)):
rxs[i].name = rxs[i].name + "." + stop[i]
needDil = self.rnaConc / self.qConc / stopDil
#q.addSamples(src=rxs,needDil=needDil,primers=["T7AX","MX","T7X","REF"],names=["%s.stopped"%r.name for r in rxs])
print "######## RT Setup ###########"
rtDil = 4
hiTemp = 95
rtDur = 20
rxin = rxs
rxs = self.runRT(src=rxs,
vol=self.rtvol,
srcdil=rtDil,
heatInactivate=True,
hiTemp=hiTemp,
dur=rtDur,
incTemp=50,
stop=[reagents.getsample(s) for s in stop
]) # Heat inactivate also allows splint to fold
print "RT volume= ", [x.volume for x in rxs]
for r in rxin:
if r.volume > 20:
print "Have more T7 reaction remaining than needed: %s has %.1f ul" % (
r.name, r.volume)
needDil /= rtDil
rtPostDil = 5
if rtPostDil != 1:
self.diluteInPlace(tgt=rxs, dil=rtPostDil)
needDil /= rtPostDil
#q.addSamples(src=rxs,needDil=needDil,primers=["T7AX","MX","REF"],names=["%s.rt"%r.name for r in rxs])
print "######## Ligation setup ###########"
extdil = 5.0 / 4
reagents.getsample("MLigase").conc = Concentration(5)
extvol = 20
print "Extension volume=", extvol
rxs = self.runLig(rxs, vol=extvol)
print "Ligation volume= ", [x.volume for x in rxs]
needDil = needDil / extdil
extpostdil = 4
if extpostdil > 1:
print "Dilution after extension: %.2f" % extpostdil
self.diluteInPlace(tgt=rxs, dil=extpostdil)
needDil = needDil / extpostdil
if not self.doexo:
self.pcrdil = self.pcrdil / extpostdil
if self.saveDil is not None:
ext = self.saveSamps(
src=rxs,
vol=3,
dil=self.saveDil,
dilutant=reagents.getsample("TE8"),
tgt=[Sample("%s.ext" % n, decklayout.DILPLATE) for n in names],
mix=(False, True)) # Save cDNA product for subsequent NGS
for i in range(len(rxs)):
q.addSamples(src=[ext[i]],
needDil=needDil / self.saveDil,
primers=[
"T7" + prefixIn[i] + "X",
"T7" + prefixOut[i] + "X", "MX", "T7X", "REF"
],
names=["%s.ext" % names[i]])
else:
for i in range(len(rxs)):
q.addSamples(src=[rxs[i]],
needDil=needDil,
primers=[
"T7" + prefixIn[i] + "X",
"T7" + prefixOut[i] + "X", "MX", "T7X", "REF"
],
names=["%s.ext" % names[i]])
if self.doexo:
print "######## Exo ###########"
prevvol = rxs[0].volume
rxs = self.runExo(rxs, incTime=30, inPlace=True)
exoDil = rxs[0].volume / prevvol
needDil /= exoDil
needDil /= 7 # Anecdotal based on Ct's -- large components (MX) reduced by exo digestion
q.addSamples(src=rxs,
needDil=needDil,
primers=["T7AX", "T7BX", "MX", "T7X", "REF"],
names=["%s.exo" % names[i] for i in range(len(rxs))])
#exo=self.saveSamps(src=rxs,vol=10*exoDil,dil=2/exoDil,dilutant=reagents.getsample("TE8"),tgt=[Sample("%s.exo"%n,decklayout.SAMPLEPLATE) for n in names]) # Save cDNA product
else:
exoDil = 1
exo = []
if self.doampure:
print "######## Ampure Cleanup ###########"
ratio = 1.5
elutionVol = 30
cleanIn = ext + exo + user
needDil = needDil * cleanIn[0].volume / elutionVol
clean = self.runAmpure(src=cleanIn,
ratio=ratio,
elutionVol=elutionVol)
q.addSamples(src=[clean[i] for i in range(len(rxs))],
needDil=needDil,
primers=["T7AX", "MX", "T7X", "REF"])
rxs = rxs + clean # Use the cleaned products for PCR
totalDil = stopDil * rtDil * rtPostDil * extdil * extpostdil * exoDil
fracRetained = rxs[0].volume / (self.t7vol * totalDil)
print "Total dilution from T7 to Pre-pcr Product = %.2f*%.2f*%.2f*%.2f*%.2f*%.2f = %.2f, fraction retained=%.0f%%" % (
stopDil, rtDil, rtPostDil, extdil, extpostdil, exoDil, totalDil,
fracRetained * 100)
if self.dopcr:
print "######### PCR #############"
print "PCR Volume: %.1f, Dilution: %.1f, volumes available for PCR: [%s]" % (
self.pcrvol, self.pcrdil, ",".join(
["%.1f" % r.volume for r in rxs]))
maxSampleVolume = 100 # Maximum sample volume of each PCR reaction (thermocycler limit, and mixing limit)
initConc = needDil * self.qConc / self.pcrdil
if self.doexo:
initConc = initConc * 7 * self.cleavage # Back out 7x dilution in exo step, but only use cleaved as input conc
else:
initConc = initConc * self.cleavage # Only use cleaved as input conc
gain = pcrgain(initConc, 400, self.pcrcycles)
finalConc = initConc * gain
print "Estimated starting concentration in PCR = %.1f nM, running %d cycles -> %.0f nM\n" % (
needDil * self.qConc, self.pcrcycles, finalConc)
pcr = self.runPCR(src=rxs,
vol=self.pcrvol,
srcdil=self.pcrdil,
ncycles=self.pcrcycles,
primers=["T7%sX" % x for x in prefixOut],
usertime=self.usertime,
fastCycling=True)
needDil = finalConc / self.qConc
pcrpostdil = 2
if pcrpostdil > 1:
self.diluteInPlace(pcr, pcrpostdil)
needDil = needDil / pcrpostdil
print "Projected final concentration = %.0f nM (after %.1fx dilution)" % (
needDil * self.qConc, pcrpostdil)
for i in range(len(pcr)):
pcr[i].conc = Concentration(stock=finalConc / pcrpostdil,
final=None,
units='nM')
if self.pcrSave:
# Save samples at 1x
if self.savedilplate:
sv = self.saveSamps(
src=pcr[:len(rxs)],
vol=[x.volume - 16.4 for x in pcr[:len(rxs)]],
dil=1,
plate=decklayout.DILPLATE)
else:
sv = self.saveSamps(
src=pcr[:len(rxs)],
vol=[x.volume - 16.4 for x in pcr[:len(rxs)]],
dil=1,
plate=decklayout.EPPENDORFS)
# for i in range(len(pcr)):
# q.addSamples(pcr,needDil,["T7%sX"%prefixOut[i]])
processEff = 0.5 # Estimate of overall efficiency of process
print "Saved %.2f pmoles of product (%.0f ul @ %.1f nM)" % (
sv[0].volume * sv[0].conc.stock / 1000, sv[0].volume,
sv[0].conc.stock)
print "######### qPCR ###########"
#q.addReferences(mindil=4,nsteps=6,primers=["T7X","MX","T7AX"])
q.run(confirm=False)
def pgm(self):
q = QSetup(self, maxdil=self.maxdilstep, debug=False, mindilvol=60)
self.e.addIdleProgram(q.idler)
if self.barcoding:
# Setup barcode primers for cleaved rounds only
self.bcprimers = [[
"BC-%s-R%d_T7" % (inp['ligand'], r + 1) for inp in self.inputs
] if self.rounds[r] == 'C' else None
for r in range(len(self.rounds))]
for bcp in self.bcprimers:
if bcp is not None:
for p in ["P-%s" % pp for pp in bcp]:
if not reagents.isReagent(p):
reagents.add(name=p,
conc=4,
extraVol=30,
plate=decklayout.REAGENTPLATE,
well="B2")
s = reagents.getsample(p) # Force allocation of a well
print "Adding %s to reagents at well %s" % (
p, s.plate.wellname(s.well))
print "BC primers=", self.bcprimers
# Add any missing fields to inputs
for i in range(len(self.inputs)):
if 'ligand' not in self.inputs[i]:
self.inputs[i]['ligand'] = None
if 'round' not in self.inputs[i]:
self.inputs[i]['round'] = None
if 'name' not in self.inputs[i]:
if self.inputs[i]['ligand'] is None:
self.inputs[i]['name'] = '%s_%d_R%d' % (
self.inputs[i]['prefix'], self.inputs[i]['ID'],
self.inputs[i]['round'])
else:
self.inputs[i]['name'] = '%s_%d_R%d_%s' % (
self.inputs[i]['prefix'], self.inputs[i]['ID'],
self.inputs[i]['round'], self.inputs[i]['ligand'])
# Add templates
if self.directT7:
self.srcs = self.addTemplates(
[inp['name'] for inp in self.inputs],
stockconc=self.tmplFinalConc / self.templateDilution,
finalconc=self.tmplFinalConc,
plate=decklayout.SAMPLEPLATE,
looplengths=[inp['looplength'] for inp in self.inputs],
initVol=self.t7vol[0] * self.templateDilution,
extraVol=0)
else:
self.srcs = self.addTemplates(
[inp['name'] for inp in self.inputs],
stockconc=self.tmplFinalConc / self.templateDilution,
finalconc=self.tmplFinalConc,
plate=decklayout.DILPLATE,
looplengths=[inp['looplength'] for inp in self.inputs],
extraVol=15)
t7in = [s.getsample() for s in self.srcs]
if "negative" in self.qpcrStages:
q.addSamples(decklayout.SSDDIL, 1, self.allprimers,
save=False) # Negative controls
if "reference" in self.qpcrStages:
q.addReferences(dstep=10,
nsteps=5,
primers=["T7WX", "MX", "T7X"],
ref=reagents.getsample("BT5310"),
nreplicates=1)
q.addReferences(dstep=10,
nsteps=5,
primers=["T7WX", "MX", "T7X"],
ref=reagents.getsample("BT5310"),
nreplicates=1)
# Save RT product from first (uncleaved) round and then use it during 2nd (cleaved) round for ligation and qPCR measurements
self.rndNum = 0
self.nextID = self.firstID
curPrefix = [inp['prefix'] for inp in self.inputs]
r1 = t7in
for roundType in self.rounds:
# Run a single round of roundType with r1 as input
# roundType is either "U" for uncleaved, or a new prefix for a cleaved round (with "T" being a T7 prepend)
# Set r1 to new output at end
# Computed output prefix
if roundType == 'U':
prefixOut = curPrefix
stop = ["Unclvd" for p in curPrefix]
else:
if roundType == 'T':
stop = ['T7%s' % p for p in curPrefix]
prefixOut = curPrefix
elif any([p == roundType for p in curPrefix]):
logging.error(
"Round %d is a cleaved round but goes to %s without changing prefix"
% (self.rndNum, roundType))
assert (False)
else:
prefixOut = [roundType for p in curPrefix]
stop = prefixOut
# May be explicitly overridden
for i in range(len(self.inputs)):
if 'stop' in self.inputs[i]:
if isinstance(self.inputs[i]['stop'], list):
assert (len(self.inputs[i]['stop']) == len(
self.rounds))
t = self.inputs[i]['stop'][self.rndNum]
else:
t = self.inputs[i]['stop']
if (roundType == 'U') != (t == 'U'):
print "Attempt to override round %d (type %s) with a input-specific round type of %s" % (
self.rndNum, roundType, t)
assert (False)
if roundType != 'U':
if t == 'T':
stop[i] = 'T7%s' % curPrefix[i]
prefixOut[i] = curPrefix[i]
else:
stop[i] = t
prefixOut[i] = t
self.rndNum = self.rndNum + 1
self.finalRound = self.rndNum == len(self.rounds)
r1 = self.oneround(q,
r1,
prefixOut=prefixOut,
stop=stop,
prefixIn=curPrefix,
keepCleaved=(roundType != 'U'),
rtvol=self.rtvol[self.rndNum - 1],
t7vol=self.t7vol[self.rndNum - 1],
cycles=self.pcrcycles[self.rndNum - 1],
pcrdil=self.pcrdil[self.rndNum - 1],
pcrvol=self.pcrvol[self.rndNum - 1],
dolig=self.allLig or (roundType != 'U'))
for i in range(len(r1)):
r1[i].name = "%s_%d" % (prefixOut[i], self.nextID)
if self.inputs[i]['round'] is not None:
r1[i].name = "%s_R%d%c" % (r1[i].name,
self.inputs[i]['round'] +
self.rndNum, roundType)
if self.inputs[i]['ligand'] is not None:
r1[i].name = "%s_%s" % (r1[i].name,
self.inputs[i]['ligand'])
print "Used ID ", self.nextID, " for ", r1[i].name, ": ", r1[i]
self.nextID += 1
r1[i].conc.final = r1[i].conc.stock * self.templateDilution
curPrefix = prefixOut
if "finalpcr" in self.qpcrStages:
for i in range(len(r1)):
if self.singlePrefix:
q.addSamples(src=r1[i],
needDil=r1[i].conc.stock / self.qConc,
primers=["T7X", "MX"])
else:
q.addSamples(src=r1[i],
needDil=r1[i].conc.stock / self.qConc,
primers=["T7X", prefixOut[i] + "X", "MX"])
print "######### qPCR ########### %.0f min" % (clock.elapsed() / 60)
self.allprimers = q.allprimers()
q.run(confirm=self.qpcrWait)
