Chemometrics-Enabled Raman Spectrometric Qualitative Determination and Assessment of Biochemical Alterations during Early Prostate Cancer Proliferation in Model Tissue

Table 5

The Raman bands (loading vectors) that explain natural groupings of PNT1a and PC3 scores using PC 5 (0.03%) for stage 1, PC 8 (0.02%) for stage 2, and PC 5 (0.01%) for stage 3 datasets.

Prostatic cells
PC3			PNT1a
Stage 1	Stage 2	Stage 3	Stage 1	Stage 2	Stage 3
604	508	574	1007	517	641
668	564	786	1014	704	697
730	869	833	1092	716	1076^c
771	913	884	1232^a	752	1209
841	1068	900	1330^a	772	1278^c
871	1077	969	1391	1217	1319
976	1191	1027	1442^a	1271	1377
1122	1333	1076^c	1468	1274	1577
1176	1471^b	1089	1681	1364
1232^a	1524	1094	1776	1471^b
1330^a	1586	1100		1514
1339		1123		1531
1442^a		1158		1557
1614		1240
		1269
		1278^c
		1439
		1482
		1561
		1596
		1631
		1641
		1699
		1712
		1724

Loading vectors (weak Raman bands) that had the most influence in the assignment of scores for each of the two cell lines. Superscripts a, b, and c identify the loading vectors (weak Raman bands) that were common for both cell lines. The values are in units of cm⁻¹.