. Author manuscript; available in PMC: 2012 Aug 15.

Published in final edited form as: Biochem Pharmacol. 2011 May 18;82(4):411–417. doi: 10.1016/j.bcp.2011.05.009

Table 1A.

Levels of RNs in human cancer cell lines.

Compound	Ionization mode	Linear range(pmol)	PANC1	H1975	HepG2	H23

			pmol/10⁶cell
ATP	negative	77 - 9240	6190±536	10157±476	3159± 75	4434±275
ADP	negative	6.5 - 650	349±321	439±41	740 ± 115	241±26
AMP	negative	7.5 - 750	132±201	167±12	355 ± 56	60±8
GTP	negative	25 - 1000	2464±128	4920±153	1246 ± 106	2496±139
GDP	negative	1.8 - 142	152±16	245±13	207 ± 8	114±10
GMP	negative	1.2 - 96	25±2	31±1	125 ± 19	13±2
CTP	negative	6.4 - 640	3221±275	3791±71	427 ± 44	2200±75
CDP	negative	1.75 - 140	112±13	123±21	56 ± 6	71±10
CMP	negative	2.5 - 200	340±33	586±39	256 ± 36	368±31
UTP	negative	7 - 350	3980±111	7608±375	1971 ± 244	3143±70
UDP	negative	5 - 200	166±10	273±25	308 ± 43	84±9
UMP	negative	1.4 - 54	54±5	120±10	259 ± 27	29±3

Note: Each data point is an average of two independent experiments (done in triplicate) and is reported as mean ± standard deviation.